The artists of the Middle Ages thought that they could give no more beautiful background to their historical paintings and half-length portraits than by introducing mountains and rocks of as fantastic and jagged a form as possible, although the latter often contrast strangely enough beside a mild, calmly serene Madonna face, or even beside the likeness of a prosaically respectable commonplace citizen of some free Imperial town. At that time, therefore, savagely broken-up, barren mountain scenery was considered the ideal type of natural scenic beauty, while, a few centuries later, such forms were found much too unpolished and irregular to be considered beautiful at all. Even old historical painters of the Netherlands, who had perhaps never in their lives seen such deeply fissured masses of rock, liked to make use of them in their backgrounds. The rugged mountain-tops in many of the pictures of Memling and Van Eyck certainly never grew in the vicinity of Bruges. This type of natural beauty was therefore established by custom even in countries where it was not indigenous. In a picture by a Low-German artist which depicts the legend of the Eleven Thousand Virgins, the city of Cologne is to be seen in the background surrounded by jagged clusters of rocks. A portrayal, true to nature, of the flat country did not satisfy the sense of beauty of the artist, who surely knew well enough that Cologne does not lie at the foot of the Alps. On the contrary, if an historical painter of the pigtail age had been obliged to paint the real Alps in the background of an historical painting, he would have rounded them off, leveled them, and smoothed them down as much as possible.
Is it a mere accident that, in the whole long period of landscape painting from Ruysdael almost up to recent times, high mountains have so very seldom formed the subject of important landscape compositions? The eye for natural scenery at that period had turned away from the conceptions of the Middle Ages, and satiated itself with the milder forms of the hills and the plain. Even when an artist like Everdingen presents to us the rocky chasms and waterfalls of Norway he moderates the fantastic forms, and, as far as possible, tries to lend to the northern Alpine world the character of the hills of middle Germany. Joseph Koch,